Antihyperglycemic and analgesic activity studies with boiled Cicer arietinum L. seeds.

In oral glucose tolerance tests, methanol extract of boiled seeds of Cicer arietinum (MECA) significantly and dose-dependently reduced blood glucose levels in glucose-loaded mice by 27.7, 31.9, 36.2, and 42.2%, respectively, at doses of 50, 100, 200 and 400 mg per kg in comparison to a standard antihyperglycemic drug, glibenclamide, which reduced blood glucose levels by 48.2% at a dose of 10 mg per kg. In acetic acid induced writhing tests in mice, MECA at the afore-mentioned doses reduced the number of writhings, respectively, by 21.4, 35.7, 39.3, and 46.4% versus the 42.9 and 53.6% reductions observed with a standard analgesic drug, aspirin, at doses of 200 and 400 mg per kg, respectively. MECA thus demonstrated considerable antihyperglycemic and analgesic properties and may be used to alleviate high blood glucose levels and provide relief from pain.

Antihyperglycemic studies with boiled and non-boiled Vigna mungo seeds.

Vigna mungo is a common leguminous crop cultivated in Bangladesh for its edible seeds, which are consumed following boiling or cooking. Since many lentil plants are known to have antihyperglycemic activity, it was of interest to determine the antihyperglycemic potential of seeds of V. mungo both in its boiled and non-boiled form. In oral glucose tolerance tests conducted in glucose-loaded Swiss albino mice, crude methanol extract of non-boiled seeds reduced blood glucose levels by 29.1, 36.5, 42.6, and 48.9%, respectively, at doses of 50, 100, 200, and 400 mg per kg body weight. At the afore-mentioned four doses, the percent reductions in blood glucose levels were, respectively, 24.1, 35.1, 39.4, and 46.5% with crude methanol extract of boiled seeds. Glibenclamide, a standard antihyperglycemic drug was observed to reduce blood glucose levels by 48.2%, when administered at a dose of 10 mg per kg. Thus the extracts of both non-boiled and boiled seeds demonstrated good antihyperglycemic potential comparable to glibenclamide and can be used as a readily available alternative to alleviate high blood glucose levels in diabetic patients.

Callus extract of Ipomoea mauritiana show analgesic and antihyperglycemic activity in Swiss albino mice.

Callus can be a viable alternative to obtain important phytochemicals and analyze crude extract for pharmacological activities rather than going the cumbersome way of collecting and destroying possibly endangered plants. In this study, callus was produced using nodal explant of Ipomoea mauritiana, and methanol extract of dried and powdered callus was evaluated for its analgesic and antihyperglycemic potential. The extract, when administered to Swiss albino mice at doses of 50, 100, 200 and 400 mg per kg significantly reduced the number of writhings in mice produced by intraperitoneal administration of acetic acid by 23.3, 33.3, 43.3, and 53.3%, respectively. A standard analgesic drug, aspirin, at doses of 200 and 400 mg per kg, reduced the number of writhings by 40.0 and 46.7%, respectively. In oral glucose tolerance tests conducted with glucose-loaded mice, the extract at doses of 50, 100, 200 and 400 mg per kg significantly reduced blood glucose levels by 35.1, 42.5, 53.6, and 58.8%. In comparison, a standard antihyperglycemic drug, glibenclamide, at a dose of 10 mg per kg reduced blood glucose levels by 60.7%. Our study indicates that methanol extract of callus of I. mauritiana can be used to alleviate pain and high blood sugar levels.

Antihyperglycemic and analgesic activity studies with Bambusa spinosa aerial parts.

Bambusa spinosa (Poaceae) is a common type of bamboo found in Bangladesh where it is known as Kata bash. It was of interest to evaluate the antihyperglycemic and analgesic potential of its aerial parts as part of our antihyperglycemic and analgesic plant screening program. In oral glucose tolerance tests, methanol extract of aerial parts of the plant (MEBS) significantly and dose-dependently reduced blood glucose levels in glucoseloaded mice by 37.5, 52.8, 58.3, and 66.8%, respectively, at doses of 50, 100, 200 and 400 mg per kg in comparison to a standard antihyperglycemic drug, glibenclamide, which reduced blood glucose levels by 60.7% at a dose of 10 mg per kg. In acetic acid induced writhing tests in mice, MEBS at the afore-mentioned doses significantly reduced the number of writhings, respectively, by 23.3, 36.7, 46.7, and 60.0% versus the 40.0 and 46.7% reductions observed with a standard analgesic drug, aspirin, at doses of 200 and 400 mg per kg, respectively. MEBS thus demonstrated considerable antihyperglycemic and analgesic properties and may be considered for use to alleviate high blood sugar levels and pain.

Analgesic and antihyperglycemic activity evaluation of Bambusa vulgaris aerial parts.

Bambusa vulgaris, also known as ‘Ora Bansh’ in Bangladesh is grown throughout the country for housing and scaffolding purposes. As part of our analgesic and antihyperglycemic plants of Bangladesh screening program, it was of interest to evaluate the analgesic and antihyperglycemic potential of aerial parts of the plant. Methanolic extract of aerial parts (MEBV) at doses of 50, 100, 200 and 400 mg per kg significantly reduced the number of writhings in acetic acid-induced pain model Swiss albino mice by 25.9, 29.6, 37.0, and 44.4%, respectively compared to reductions of 40.7 and 51.9%, respectively, obtained with 200 and 400 mg per kg of a standard analgesic drug, aspirin. MEBV, at doses of 100, 200 and 400 mg per kg also significantly lowered blood glucose levels in mice, respectively, by 32.8, 45.8, and 55.3% compared to control mice. A standard antihyperglycemic drug, glibenclamide, when administered at a dose of 10 mg per kg lowered blood glucose level by 50.8%. Taken together, the results indicate that the aerial parts of the plant possess considerable analgesic and antihyperglycemic potential, which can possibly be attributed to the presence of alkaloids and saponins in the extract.

Preliminary phytochemical screening, antihyperglycemic, analgesic and toxicity studies on methanolic extract of aerial parts of Corchorus olitorius L.

Corchorus olitorius, also known as Nalta jute or Tossa jute is grown throughout Bangladesh for its fibre and because the aerial parts are edible. It was of interest to phytochemically screen and conduct antihyperglycemic, analgesic and toxicity studies of the aerial parts. Antihyperglycemic and analgesic activities, phytochemical screening and toxicity studies were done through standard methods. Administration of methanol extract of aerial parts (MECO) led to dose-dependent reductions in blood glucose levels in glucose-loaded mice. At doses of 50, 100, 200 and 400 mg per kg, the extract reduced blood glucose levels by 18.6, 29.3, 32.9, and 50.7%, respectively compared to control animals. By comparison, a standard antihyperglycemic drug, glibenclamide, when administered at a dose of 10 mg per kg, reduced blood glucose level by 48.9%. In analgesic activity tests, MECO at doses of 50, 100, 200 and 400 mg per kg reduced the number of writhings by 19.2, 42.3, 53.8, and 57.7%, respectively. A standard analgesic drug, aspirin, reduced the number of writhings by 38.5 and 65.4%, respectively, when administered at doses of 200 and 400 mg per kg. Phytochemical screening of MECO showed presence of alkaloids, flavonoids, saponins and tannins, which may be responsible for the observed effects.

Antihyperglycemic and antinociceptive activities of methanolic extract of Euphorbia thymifolia L. whole plants / 中西医结合学报

To study the antihyperglycemic and antinociceptive activities of methanolic extract of the whole plant of Euphorbia thymifolia L., a plant used in folk medicine of Bangladesh for treatment of diabetes and pain.